{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "The flower volatile compounds ( FVCs ) of two tetraploid Freesia hybrida ( pink - yellow and yellow ) cultivars and their cut flowers were analysed by headspace solid - phase microextraction combined with gas chromatography - mass spectrometry ."}
{"Chemical": []}